It is no use crying.哭没有用.
It is a great fun playing football．打篮球很有趣.
It is a waste of time trying to explain．设法解释是浪费时间.
It is useless speaking.光说没用.
It is good playing chess after supper．晚饭后弈棋挺好.
It is nice to meet you .见到你很高兴
I am glad to help you.
I am afraid to go to school.我害怕上学